Quadratic Functions

Quadratic Functions: http://uncw.edu/courses/mat111hb/pandr/quadratic/quadratic.html#sec1 (Graph)
Standard Form: http://uncw.edu/courses/mat111hb/pandr/quadratic/quadratic.html#sec2
Applications: http://uncw.edu/courses/mat111hb/pandr/quadratic/quadratic.html#sec3
Solving quadratic equations by factorization, second video: http://www.onlinemathlearning.com/solve-quadratic-factoring.html
Solving quadratic equations by completing the square, third video: http://www.onlinemathlearning.com/quadratic-complete-square.html